第十四章单元测试
- What method is used to determine SiO2 content in this experiment? （ ）
- What will happen if MgO content in cement(水泥) is too high? （ ）
- Which of following methods are used to determine CaO content? （ ）
- What are the advantages of gravimetric analysis? （ ）
- The quality of cement relates to the national economy and the people's livelihood. （ ）
A:precipitate analysis B:gravimetric titration C:gravimetric analysis D:precipitate titration
答案:gravimetric analysis
A:make the cement stronger B:make the cement unstable C:<span style="color:inherit; font-family: "PingFang SC"; font-size: 16px; caret-color:inherit;">No options available</span> D:make the cement stable
A:direct titration B:precipitate titration C:complexation titration D:indirect titration
A:simple procedures B:do not need primary standard C:cost less time D:high accuracy
A:对 B:错
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